>>First of all, it doesn't update ccode in its InteractiveChange despite all my efforts.
>>
>
>Combobox will not update in InteractiveChange, as far as I know. When you select the value from list, Valid event is also fired. Move code from InteractiveChange to Valid and it should work...

Thanks, Vlad. I did and it works. (Though I have it working with InteractiveChange too :))